Supplemental Disclosure of Cash Flow and Non-Cash Investing and Financing Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Supplemental Cash Flow Elements [Abstract]
Shares issued in conjunction with acquisition (in shares)	441,009
Cash paid for interest	$ 162	$ 86	$ 48
Income taxes paid	642	2,293	384
Retirement of fixed assets	0	319	0
Deferred financing costs	10	504	0
APIC related tax adjustments	(424)	7,757	0
Stock issuance of 441,009 shares in connection with acquisition of Stability	3,346	0	0
Stock issuance of 43,344, 16,493 and 15,958 shares in exchange for services performed in 2016, 2015 and 2014, respectively	$ 346	$ 164	$ 117
Shares issued for services performed (in shares)	43,344	16,493	15,958